Soft Switching DC-DC Converter Simulation Using Simulink/Simscape

Generally, switching losses of power electronics converters are proportional to their operating frequency. Consequently, for high frequency DC-DC converter, zero voltage switching (ZVS) technique is preferable over hard switching. If switches transition from OFF to ON occurs when the voltage across the switching element is zero, it reduces switching losses that is combined with heat and Electro Magnetic Interference (EMI). Such technique is defined as soft switching. Resonant components L-C are used to produce soft switching for the proposed topology. The values of the resonant components are found by applying related equations that were obtained according to the circuit topology. Moreover, very little electromagnetic interference (EMI) produces with this type of converters due to soft switched, which can make the proposed converter suitable for communication applications. In order to ensure efficient resonant converter, the research focuses on modelling a circuit with the fewest components. The converter is simulated and the model validates its viability, with two IGBT thermal models via MATLAB/SIMSCAPE program.